Dowhatyoulovewhileyoustillhavetimetodoit;learnwhatyouwanttok

Do what you love while you still have time to do it; learn what you want to know while you still have time to learn; do the things you have thought of while you still have time. You know that time past cannot be called back again.

喜欢做什么就去做吧，趁着还有时间；想学什么就去学吧，趁着还有时间；想到什么就行动吧，趁着还有时间。要知道，光阴流逝，不可复得。

call back 收回；回电话

think of 想到，想起